BE347842A - - Google Patents
Info
- Publication number
- BE347842A BE347842A BE347842DA BE347842A BE 347842 A BE347842 A BE 347842A BE 347842D A BE347842D A BE 347842DA BE 347842 A BE347842 A BE 347842A
- Authority
- BE
- Belgium
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
- G01S1/72—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using ultrasonic, sonic or infrasonic waves
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1757874X | 1927-05-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE347842A true BE347842A (en:Method) |
Family
ID=7742043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE347842D BE347842A (en:Method) | 1927-05-06 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1757874A (en:Method) |
| BE (1) | BE347842A (en:Method) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2534847A (en) * | 1940-03-13 | 1950-12-19 | Auscher Jean | Directional sound detector |
| US8036821B2 (en) * | 2007-12-18 | 2011-10-11 | Honeywell International Inc. | Methods and systems for diminishing the effects of an acoustic signature of vehicles |
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0
- BE BE347842D patent/BE347842A/xx unknown
-
1928
- 1928-01-06 US US244993A patent/US1757874A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US1757874A (en) | 1930-05-06 |